At 538.com, analyst Nate Silver notes an interesting phenomenon: People seem to assume the environment has improved just because Obama took office. Silver looks at a Gallup poll that says 41 percent of Americans think the environment is getting better, up from 26 percent last year. Silver said he assumed the increase was driven by Republicans, but it’s not. It’s driven by Democrats and Independents.

In 2008:

In 2009:

Silver writes that any recent environmental action, if successful, “merely mean that the environment is getting worse less quickly, not that it’s actually improving.” He concludes, “There is the risk that Americans assume — by Obama’s mere presence in the White House — that more is being done to help the environment than actually is.”